<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			#one{
				width: 500px;
				height: 500px;
				background-color: aqua;
				display: flex;
				align-items: center;
			}
			#two{
				width: 100px;
				height: 100px;
				background-color: hotpink;
			}
		</style>
	</head>
	<body>
		<div id="one">
			<div id="two">
				
			</div>
		</div>
	</body>
</html>
